fn handle_key_event()

in codex-rs/tui/src/bottom_pane/multi_select_picker.rs [527:589]

• 62 lines of code
• 23 McCabe index (conditional complexity)

    fn handle_key_event(&mut self, key_event: KeyEvent) {
        // Printable characters always feed search. Movement aliases such as
        // plain j/k only apply through non-text events or modified bindings.
        let allow_plain_char_navigation = !is_plain_text_key_event(key_event);

        match key_event {
            _ if allow_plain_char_navigation
                && self.ordering_enabled
                && self.keymap.move_left.is_pressed(key_event) =>
            {
                self.move_selected_item(Direction::Up);
            }
            _ if allow_plain_char_navigation
                && self.ordering_enabled
                && self.keymap.move_right.is_pressed(key_event) =>
            {
                self.move_selected_item(Direction::Down);
            }
            _ if allow_plain_char_navigation && self.keymap.move_up.is_pressed(key_event) => {
                self.move_up()
            }
            _ if allow_plain_char_navigation && self.keymap.move_down.is_pressed(key_event) => {
                self.move_down()
            }
            _ if allow_plain_char_navigation && self.keymap.page_up.is_pressed(key_event) => {
                self.page_up()
            }
            _ if allow_plain_char_navigation && self.keymap.page_down.is_pressed(key_event) => {
                self.page_down()
            }
            _ if allow_plain_char_navigation && self.keymap.jump_top.is_pressed(key_event) => {
                self.jump_top()
            }
            _ if allow_plain_char_navigation && self.keymap.jump_bottom.is_pressed(key_event) => {
                self.jump_bottom()
            }
            KeyEvent {
                code: KeyCode::Backspace,
                ..
            } => {
                self.search_query.pop();
                self.apply_filter();
            }
            KeyEvent {
                code: KeyCode::Char(' '),
                modifiers: KeyModifiers::NONE,
                ..
            } => self.toggle_selected(),
            _ if self.keymap.accept.is_pressed(key_event) => self.confirm_selection(),
            _ if self.keymap.cancel.is_pressed(key_event) => self.close(),
            KeyEvent {
                code: KeyCode::Char(c),
                modifiers,
                ..
            } if !modifiers.contains(KeyModifiers::CONTROL)
                && !modifiers.contains(KeyModifiers::ALT) =>
            {
                self.search_query.push(c);
                self.apply_filter();
            }
            _ => {}
        }
    }